Umbkella-ebame



UNTTED sTATns PATENT oFFicE. i

ROBERT E. ROGERS, 0F PHILADELPHIA, PENNSYLVANIA.

UMBRELLA-FRAME.

Specification of Letters Patent No. 25,763, dated October 11, 1859.

To all fwhom it may concern.'

Be it known that I, ROBERT E. ROGERS, of the city of Philadelphia, inthe county of Philadelphia and State of Pennsylvania, have inventedcertain new and useful Improvements in Umbrella and Parasol Frames; andI do hereby declare the following to be a full and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters and marks thereon.

My invention has reference to umbrella and parasol frames constructed oftubes, and consists in combining with tubular ribs and stretchers meansfor uniting the different parts of the frame and giving strength to thesame.

In the drawings forming part of this specification (a, a) represent thelongitudinal and end views of a steel tubular rib or stretcher ofcylindrical form; (b, 6,) represent the same views of a tubular rib orstretcher of an oval form; (c) indicates a strengthening tube put on theend of the rib or stretcher to thicken and give strength to it whenflattened; (d) shows the position of this strengthening tube before anypressure has been used; (e, and e) show the same after the end has beenflattened; (f) indicates a piece of sheet metal cut out in such form aswill, when made into a tube around the stretcher, form a fork to aid inthe fastening together of the rib and stretcher; (f) represents thepiece formed out of (7') and placed on the end of the stretcher; (g)represents the saddle pressed upon the rib and slightly indenting it;(71.) indicates a short iece of wire introduced into the caliber o therib and intended to support the sides of the rib when pressed and togive to it increased strength.

For making the tubes I employ either wire or sheet metal cut intoribbons or strips. When wire is used it is first run between plainrollers and flattened to the proper; width and thickness. The ribbons orllets being annealed are passed through draw plates, or other suitablemachinery, and are transformed into uniform and symmetrical tubes of thedesired shape and diameter, having a great degree of rigidity comparedwith their weight.

To furnish greater strength to the ends of the ribs and stretcher-s,where the connections are made, a short piece of tube (c) of a littlelarger diameter than the rib 0r stretcher, and for sake of neatness ofvery thin metal, is slipped tightly over the end of the rib or stretcheras seen in (d) and when heated is attened down as represented in (e, e).

The fork for aiding in unitin the rib and stretcher is made by cuttingigrom thin sheet metal, a piece of the form seen in (f) and after givingit the form of a tube, slipping it over the end of the stretcher. Thistubular fork being slid along the stretcher, out of the way, the end ofthe stretcher is flattened to correspond with the blades of the fork;the fork is then Vbrought back to the end, and if the flattening of theend of the stretcher has been properly done, the tube will embrace orfit it tightly, and the central blade, or that of the stretcher, willcorrespond in line with the outside blades of the fork.

(f) shows the fork in lace in connection with the flattened end o thestretcher. It will be observed that this end of the stretcher may itselfbe strengthened before being nished by the piece of tube (c).

The piece (f) may be made into the tubular y 'l form directly upon thestretcher, by pressing it around it after the end of the stretcher hasbeen flattened. I therefore do not confine myself to any time or stagein the operation of connecting the parts, when this tubular fork may bemade and secured in its place.

The rib is strengthened at the point where the saddle is fastened to itin the following way: A piece of wire, which need not be more than halfan inche long, made to fit loosely the caliber of the rib is introducedinto the tubular rib and pushed forward by means of a small rod until itreaches the position where the saddle is to be put, the saddle is thenplaced over the rib and somewhat squared; the pressure tlattens orindents a little this part of the rib and carries the saddle into thedepression, where it will remain firmly fixed, while the wire within therib will compensate in stiffness and strength for any diminution itmight sustain by being flattened. In (g) the saddle is representedpressed upon the rib, the

los

latter having the Wire previously introduced into it.

5 Letters Patent, is-

Combining with tubular ribs and stretch- .l ers constructed as hereindescribed the'v means for uniting the ribs and stretchers and forstrengthening the tubular parts of Havin? thus fully set out my`invention* what I c aim as new and desire to secureby the frame asherein set forth.

R. E. ROGERS. `7i-messes:

JOHN THOMPSON, LORENZO TAGGART.

